3UA52 thermal overload relay
Application
3UA52 thermal overload relay are suitable for overload and phase-failure protection of AC motors with frequency of 50/60Hz, voltage up to 690-1000V, current up to 0.1-630A under 8-hours duty or uninterrupted duty.
Functions provided by these relays, are phase-failure protection, temperature compensation, ON/OFF indication and manual/automatic reset.
Applicable Standards: National Standard: GB 14048, International Standard: IEC 60947-4-1.
The relays can be mounted onto contactors or installed as single units...
Operating Conditions
The altitude couldn t exceed 2000m.
Ambient temperature: -5 ~+55 degree centigrade and the average temperature no more than +35 degree centigrade in 24 hours.
Atmosphere: Comparative humidity no more than 50% at max +40 degree centigrade, and it may be higher at a lower temperature. The lowest average temperature no more than +20 degree centigrade in the wettest month.
The maximum average comparative humidity of this month could not exceed 90%, The change of temperature leading to dew on the product must be considered.
Class of pollution: Class 3.
The slope between installation surface and vertical surface could not exceed plus and minus 5 degree
Keeping away from explosive, corrosive and electric atomy.
Keeping dry.
The product should be used and installed at certain place without any shock, vibration etc.
Features
Three-phase thermal relays with release class 10A.
With differential phase-failure protection.
With continuous current adjusting scale.
With temperature compensation.
With ON/OFF indicator.
With Manual/Auto reset button.
With Auxiliary contacts 1 NO+1 NC insulated each other.
Mounting: Plug in connection with contactor or install as a single unit
|
Protection Characteristics |
|
Item |
NO. |
Times the setting current |
Release time |
Test condition |
Overload
protection |
1 |
1.05 |
> 2h |
Start from Cold status |
|
2 |
1.2 |
< 2h |
Start from Hot status right after item no. 1 |
|
3 |
1.5 |
< 2m |
Start from Hot status right after item no. 1 |
|
4 |
7.2 |
2s< Tp< 10s |
Start from Cold status |
Phasefailure
protection |
|
Any two phases |
Another phase |
|
|
|
5 |
1.0 |
0.9 |
> 2h |
Start from Cold status |
|
6 |
1.15 |
0 |
< 2h |
Start from Hot status right after item no. 5 |
|
Technical Data |
|
|
|
|
Item |
3UA50 |
3UA52 |
3UA54 |
|
Rated operational current |
14.5 |
25 |
36 |
|
Rated operational voltage |
690 |
690 |
690 |
|
Phase-failure protection |
Yes |
Yes |
Yes |
|
Manual/Auto reset |
Yes |
Yes |
Yes |
|
Temperature compensation |
Yes |
Yes |
Yes |
|
Releasing indicator |
Yes |
Yes |
Yes |
|
Test button |
Yes |
Yes |
Yes |
|
Mounting |
Plug-in |
Plug-in |
Plug-in |
|
Auxiliary |
1NO+1NC |
1NO+1NC |
1NO+1NC |
|
AC-15 220V rated current A |
1.15 |
1.15 |
1.15 |
|
AC-15 380V rated current A |
1.1 |
1.1 |
1.1 |
|
DC-13 220V rated current A |
0.2 |
0.2 |
0.2 |
Conductor
cross
section
(mm2) |
Main circuit |
Solid or stranded conductor |
2.5~6 |
2.5~6 |
1.5~25 |
Finely stranded conductor
with end sleeve |
1.5~4 |
1.5~4 |
1~16 |
|
|
Auxiliary
circuit |
Terminal screw |
M4 |
M4 |
M5 |
|
Solid or stranded conductor |
2 x (0.5~1) |
2 x (0.5~1) |
2 x (0.5~1) |
Finely stranded conductor
with end sleeve |
2 x (0.5~1) |
2 x (0.5~1) |
2 x (0.5~1) |
|
Terminal screw |
M3.5 |
M3.5 |
M3.5 |
|
Selection and Ordering Date |
|
Type |
Number |
Rated current A |
Fuse links A |
For contactor |
|
|
|
|
1 |
2 |
|
|
3UA52 |
0A |
0.1-0.16 |
63 |
0.5 |
CJX1-16
CJX1-22 |
|
|
0C |
0.16-0.25 |
63 |
1 |
|
|
0E |
0.25-0.4 |
63 |
1.6 |
|
|
0G |
0.4-0.63 |
63 |
0 |
|
|
0J |
0.63-1 |
63 |
4 |
|
|
0K |
0.8-1.25 |
63 |
4 |
|
|
1A |
1-1.6 |
63 |
6 |
|
|
1B |
1.25-2 |
63 |
6 |
|
|
1C |
1.6-2.5 |
63 |
6 |
|
|
1D |
2-3.2 |
63 |
10 |
|
|
1E |
2.5-4 |
63 |
10 |
|
|
1F |
3.2-5 |
63 |
16 |
|
|
1G |
4-6.3 |
63 |
16 |
|
|
1H |
5-8 |
63 |
20 |
|
|
1J |
6.3-10 |
63 |
25 |
|
|
1K |
8-12.5 |
63 |
25 |
|
|
2A |
10-14.5 |
63 |
35 |
|
|
2B |
12.5-20 |
63 |
35 |
|
|
2C |
16-25 |
63 |
50 |
Zhejiang Huayang Electric Co., Ltd. Specializes in manufacturing the Electronic overload Relays, Thermal Overload Relays, Electronic Voltage Relays, Other Protection & Monitoring Devices, Current Transformers, Shunt and any other electrical equipments. After several years' development, Vaya has become a larger enterprise combining research, production, sales and after-sales service of electronic relay and is one of the famous manufacturers in China. All of our production procedures are strictly followed ISO 9001. We also get across safety certification such as CE, CB, UL, CCC, etc. We are sure that we can offer you the product with good quality as well as competitive price as we have advanced technology and prefect testing equipments, with Up-To-Date machines and production.
Thanks to the perfect character, good service, and high quality, our products are well sold both in domestic and oversea markets, and highly praised by the clients. With the principle of quality, technology and credit, we insist on "Talents Is Our Base, Technique is the Source of Enterprise Development". And always continually research and develop new products to meet the clients' need. Look forward to establishing a long term business relationship with you!
